JP6436766B2 - Bag - Google Patents

Description

  The present invention relates to a bag body that can store contents, and more particularly, to a bag body that is used to process the contents by bringing them into contact with an additional charge such as a liquid and then separate the additional charge.

  Conventionally, there has been known a bag having a function of discharging a liquid after opening the bag, pouring liquid, bringing the contents into contact with the liquid, and subjecting the contents to immersion treatment.

  For example, Patent Document 1 describes a standing pouch with a resealable chuck. In the production of this standing pouch, a heat seal bar having irregularities is used to join the chuck to the pouch body, and the chuck and the pouch body are not joined by the recess of the seal bar. On the other hand, the “joining surface” where the chuck and the pouch body are joined is formed by the convex portion of the seal bar. Therefore, the standing pouch of Patent Document 1 only pours liquid from the non-joint surface even when the standing pouch chuck is resealed after pouring water into the contents in the standing pouch and then dipping. Can be discharged.

  Conventionally, by using a peelable outer layer, the bag portion containing the contents is sealed before use, but a bag providing a function of discharging the contents at the time of use has also been known.

  For example, Patent Document 2 discloses a standing pouch including a peelable outer layer, a peelable layer, and a body portion including an inner layer, and an unsealed tab portion that triggers peeling of the peelable outer layer protrudes from the peripheral edge of the pouch. A standing pouch is described.

  In the vicinity of the edge of the unsealed tab portion of the standing pouch, an outer layer peeling half-cut line is engraved at a depth substantially penetrating the inner layer from the inside of the pouch. In addition, an annular half cut line is formed at a depth that substantially penetrates the inner layer at other portions of the inner layer. Therefore, pinch the unsealed tab part, peel the outer layer from the vicinity of the outer layer peeling half-cut line, and remove the inner layer along the annular half-cut line. Can be volatilized.

JP 2008-273530 A JP 2009-0294769 A

  However, since the standing pouch described in Patent Document 1 has the same opening for pouring water and the drain port for draining, it is necessary to reseal after pouring. The standing pouch also needs to be provided with a chuck member for re-sealing. However, a heat seal bar having special irregularities is used to join the chuck member to the body member, which is expensive. Furthermore, when joining the chuck member to the body member, high-precision joining is required for alignment.

  In addition, the standing pouch described in Patent Document 2 includes a peelable outer layer, but does not include a mechanism for introducing additional input such as water. Furthermore, since the unsealed tab portion for peeling the peelable outer layer protrudes from the peripheral edge of the pouch, the unsealed tab portion is cut off due to the unsealed tab portion coming into contact with other pouches during transportation. There is a possibility that the outer layer peels off from the unsealed tab portion and opens.

  Therefore, the present invention is less likely to break the tab during transportation, or the outer layer peels off and opens, so that additional input such as liquid can be input by opening, and processing of the contents by the additional input It aims at providing the bag body which can discharge | emit an additional input smoothly later.

In order to solve the above problems, the present invention adopts the following solutions:
[1] A bag that is formed of one or more liquid impermeable films, and at least one of the liquid impermeable films is a laminated film including an inner layer and a peelable outer layer,
A peripheral seal part that forms a bag part by sealing part or all of the peripheral part of the liquid-impermeable film;
A tearing guide part capable of tearing the bag body by removing at least a part of the peripheral seal part and opening the bag part; and a peeling trigger part serving as a peeling trigger for the peelable outer layer;
With
When the bag body is torn from the tear guide portion, the bag portion is opened, and a new side of the peeling trigger portion is formed so that the peeling trigger portion can be easily pinched and the peelable outer layer When the bag is peeled, the opening of the inner layer is exposed.
[2] Of the liquid impermeable film, a portion corresponding to the peeling trigger portion is at least partially removed, and an inner surface of the peeling trigger portion is at least partially exposed. [1] ].
[3] The peripheral seal part seals only a part of the peripheral part of the liquid impermeable film, and the bag body seals a part of the inside of the peripheral part of the liquid impermeable film. The bag body according to [1] or [2], further comprising an inner peripheral seal portion that is integrated with the peripheral seal portion and seals the bag portion. .
[4] Any one of [1] to [3], further including an inner half-cut for peeling trigger that substantially penetrates the inner layer at a boundary portion between the peeling trigger portion of the outer layer and the remaining portion of the outer layer. The described bag.
[5] A part of the outer layers constituting the laminated film when having an outer layer half cut carved from the outer layer side of the laminated film, thereby pinching the peeling trigger part and peeling the outer layer. A bag object given in any 1 paragraph of [1]-[4] from which only is exfoliated.
[6] The bag according to any one of [1] to [5], wherein contents are stored in the bag portion.
[7] The bag according to [6], wherein the content is processed by contact with an additional charge.
[8] The bag according to [7], wherein the additional charge is a liquid.
[9] The bag according to [8], wherein the content is subjected to an immersion treatment by contact with the additional input that is a liquid.
[10] The bag according to any one of [1] to [9], wherein the opening of the inner layer is formed by punching.
[11] The bag according to any one of [1] to [9], wherein an inner half-cut for opening that substantially penetrates the inner layer is formed at a location corresponding to an outline of the opening of the inner layer.
[12] The bag according to [10] or [11], wherein the opening can discharge liquid.
[13] The bag according to any one of [1] to [12], wherein the inner layer includes a sealant layer as an innermost layer.
[14] The peripheral seal portion includes an upper seal portion that seals at least a portion of the upper portion of the bag body, a side seal portion that seals at least a portion of the side portion of the bag body, and / or The bag according to any one of [1] to [13], further including a bottom seal portion that seals at least a part of the bottom of the bag.
[15] The bag according to any one of [1] to [14], which is formed by any one of the following methods (I) to (V):
A method (I) in which the laminated film is folded so that the inner layers face each other and the folded portion is M-shaped, and the upper and both sides of the folded film are sealed with the peripheral seal portion;
A method in which the laminated film is folded so that the inner layers face each other and the folded portion is on one side, and the other side, top, and bottom of the folded film are sealed with the peripheral seal portion (II );
Fold the laminated film so that the inner layers face each other and the folding part is on one side, put the bottom member folded in two into the bottom of the folded film, and the bottom of the folded film Method (III) of sealing at least a part of the bottom member with the peripheral seal portion and sealing the other side portion and the upper portion of the folded film with the peripheral seal portion;
Method (IV) in which the laminated film and another film are overlapped and the upper part, both side parts and the bottom part are sealed with the peripheral seal part (IV); (V) which seals a part and a bottom part with the said peripheral seal part.
[16] The bag according to [15], wherein the bag portion is formed by the method (I), (III), or (V), and the bottom portion of the bag portion has a ship bottom shape.
[17] The bag according to [16], which is self-supporting.

  According to the bag body of the present invention, a new side of the peeling trigger portion is formed by tearing the bag body, and the peeling trigger portion becomes easy to pinch, so the peeling trigger portion is the peripheral portion of the bag body before the tearing. Therefore, it is not necessary to project outward from the outer side of the bag body, or such a necessity is small, and therefore, damage to the peeling trigger portion, peeling from the bag body, and the like can be suppressed during transportation of the bag body.

  Further, according to the bag body of the present invention, since the bag body can be torn and opened from the tearing guide portion, an additional charge such as water can be charged into the bag portion at the time of use.

  Furthermore, according to the bag body of the present invention, the opening of the inner layer is exposed by peeling off the outer layer, so that the additional input can be discharged after processing the contents with the additional input. In this connection, by tearing and opening the bag body from the tear guide part, a new side of the peeling trigger part is formed, and the peeling trigger part is easy to pinch, so that the outer layer is peeled off before opening. User error can be avoided.

FIG. 1 is a perspective view of a bag body according to the first embodiment of the present invention. FIG. 2 is a front view of the bag body of FIG. 1. FIG. 3 is a state diagram showing how the bag body is used by a cross section of the bag body along line A-A ′ of FIG. 2. FIG. 4 is a state diagram showing the usage of the bag body by the cross section of the bag body along the line B-B ′ of FIG. 2. FIG. 5 is a front view of a bag body according to the second embodiment of the present invention. FIG. 6 is a state diagram showing how the bag body is used by the cross section of the bag body along line A-A ′ in FIG. 5. FIG. 7 is a perspective view of a bag body according to the third embodiment of the present invention. FIG. 8 is a front view of the bag body of FIG. FIG. 9 is a state diagram illustrating the usage of the bag body by the cross-section of the bag body along the line A-A ′ of FIG. 8.

<Bag body>
The bag of the present invention is formed of one or more liquid impermeable films, and at least one of the liquid impermeable films is a laminated film including an inner layer and a peelable outer layer.

  The bag body of the present invention includes a peripheral seal portion that forms a bag portion by sealing a part or all of the peripheral portion of the liquid-impermeable film; the bag portion is formed by removing at least a part of the peripheral seal portion. A tearing guide portion capable of tearing the bag body in an opened state; and a peeling trigger portion serving as a peeling trigger for the peelable outer layer.

  Hereinafter, the bag of the present invention will be described with reference to the drawings. Here, FIGS. 1-4 has shown 1st Embodiment of the bag body of this invention, and FIG. 5 and 6 has shown 2nd Embodiment of the bag body of this invention. Further, FIGS. 7 to 9 show a third embodiment of the present invention.

  Specifically, FIG. 1 is a perspective view of a first embodiment of the bag body of the present invention, FIG. 2 is a front view of the bag body of FIG. 1, and FIGS. It is a state figure which shows the usage method of a bag body by the cross section of the bag body in line AA 'of 2 and line BB'. 3 (a) and 4 (a), FIG. 3 (b) and FIG. 4 (b), FIG. 3 (c) and FIG. 4 (c), and FIG. 3 (d) and FIG. 4 (d). These show partial sectional views of the bag body 1 at the same timing.

  FIG. 5 is a front view of the second embodiment of the bag body of the present invention, and FIG. 6 shows the usage of the bag body by the cross section of the bag body at the line AA ′ in FIG. FIG.

  7 is a perspective view of a third embodiment of the bag body of the present invention, FIG. 8 is a front view of the bag body of FIG. 7, and FIG. 9 is a line AA in FIG. It is a state figure which shows the usage method of a bag body by the cross section of the bag body in '.

  When the bag of the present invention is torn from the tearing guide portion, the bag portion is opened. That is, the bag portion is sealed before the bag body of the present invention is cut from the tear guide portion. Therefore, for example, since the bag portion is sealed when the bag body is transported, the atmosphere in the bag portion can be kept stable. On the other hand, by cutting the bag body from the tearing guide portion and opening the bag portion, it is possible to put additional charge into the bag portion.

  Further, when the bag of the present invention is torn from the tearing guide portion, a new side of the separation trigger portion that becomes the separation trigger of the outer layer is formed, and the separation trigger portion is easily pinched. Therefore, for example, the peeling trigger part does not protrude outward from the peripheral part of the bag body, so that it is difficult to be damaged during transportation of the bag body, while the bag body is torn from the tear guide part and a new peeling trigger part is formed. By forming the side, it is possible to make it easy to pinch the peeling trigger portion. Therefore, the bag of the present invention can achieve both durability of the peeling trigger portion and ease of pinching.

  Moreover, when the outer layer of the bag of the present invention is peeled, the opening of the inner layer is exposed. In other words, until the outer layer is peeled off by pinching the peeling trigger part, the contents and / or additional inputs are difficult to be discharged from the inner layer of the bag body, but when the outer layer is peeled to expose the opening of the inner layer, Through the opening, it is possible to discharge the contents and / or additional inputs from the bag. Therefore, the bag body of the present invention can control the timing of discharging the contents and / or the additional input from the bag portion to give the bag body an immersion treatment function, a draining function, a hot water draining function, or the like. .

  In the first embodiment of the bag body of the present invention shown in FIGS. 1 to 4, the bag portion 3 before opening is sealed by the peripheral seal portion 2 and the inner peripheral seal portion 11, and the peeling trigger portion of the bag body 1. 4 is surrounded by the peripheral seal portion 2 and the inner peripheral seal portion 11, so that it is difficult to pinch (FIGS. 1, 2, 3 (a), and 4 (a)).

  On the other hand, when the bag body 1 is torn from the tear guide portion 5, the upper seal portion of the peripheral seal portion 2 is cut along the planned tear line, so that the peeling trigger portion 4 is affected by the peripheral seal portion 2. It becomes easy to pick it up (FIG. 3B).

  Further, when the upper seal portion is cut along the planned tear line in this way, the upper portion of the bag portion 3 opens, so that an additional charge such as water can be put into the bag portion 3 so that the contents 15 can be processed. (FIG. 4B).

  Thereafter, when the peeling trigger 4 is pinched and the outer layer 9 is peeled off (FIGS. 3C and 4C), the portion of the inner layer 8 surrounded by the opening inner layer half-cut 13 adheres to the outer layer 9. As a result, the opening 6 is formed in the inner layer 8 (FIG. 4C), and drainage can be performed from the opening 6 (FIG. 4D).

  In the first embodiment of the bag body of the present invention, as shown in FIG. 1, since the bottom portion of the bag body 1 has a ship bottom shape, the bag body 1 can stand on its own, and relatively Large contents can be stored.

  The bag of the present invention can be used as a container that can contain the contents, an immersion treatment pouch, a draining pouch, a hot water cutting pouch, or a standing pouch.

[Liquid impermeable film]
As described above, since the bag of the present invention is formed of a liquid impermeable film, the liquid impermeable film will be described below.

  At least one of the liquid impermeable films forming the bag of the present invention is a laminated film including an inner layer and a peelable outer layer.

  When forming a bag body only with a laminated film including an inner layer and a peelable outer layer, the laminated film can be folded into a body member of the bag body.

  On the other hand, when forming a bag body with a plurality of liquid impermeable films, a laminated film including an inner layer and a peelable outer layer and another liquid impermeable film are faced and sealed to form a bag body member. It can be.

  For example, the bag 1 according to the first embodiment of the present invention shown in FIG. 1 is formed by a pair of liquid impermeable films. In that case, as shown in FIGS. 3 and 4, one liquid impermeable film is a laminated film 7 including an inner layer 8 and a peelable outer layer 9, while the other liquid impermeable film 10 is a liquid. It is not limited as long as it has impermeableness, and may be the same as or different from the liquid impermeable film 7.

  Here, when the liquid impermeable film 10 is a film other than the laminated film 7 including the inner layer 8 and the peelable outer layer 9, the liquid impermeable film 10 is used for various liquid-filled bag bodies. For example, a single layer or a multilayer film mainly composed of plastic, waterproof paper or cloth may be used.

  Since the laminated film 7 includes the inner layer 8 and the peelable outer layer 9, the inner layer and the peelable outer layer will be described below.

[Inner layer]
The inner layer is a layer that faces the inner side or the contents side of the bag body when the bag body is formed. The inner layer may include a commercially available resin film, an extruded resin film, and the like as the base layer in order to impart liquid impermeability to the laminated film.

  Examples of the base material layer include polyethylene terephthalate film (PET), low density polyethylene film (LDPE), medium density polyethylene film (MDPE), high density polyethylene film (HDPE), linear low density polyethylene film (LLDPE), and polypropylene. A film (PP), a nylon film (Ny) or the like may be used alone or in combination.

  The inner layer preferably includes a sealant layer as the innermost layer. The sealant layer is a layer for sealing one or more liquid impermeable films.

  The material of the sealant layer is selected depending on the material to be sealed. For example, LDPE, LLDPE, PP, ethylene-methacrylic acid copolymer (EMAA), ethylene-acrylic acid copolymer (EAA), ionomer resin, ethylene-vinyl acetate. It may be a resin such as a copolymer. These resins may be in the form of, for example, a stretched or non-stretched film, a melted resin for extrusion lamination, and a paint for hot melt.

  Specifically, the sealant layer can be formed of “Suzuron L” manufactured by Aisero Chemical Co., Ltd. or an easy open film.

  Furthermore, the inner layer may include other layers such as a resin layer other than the base material layer, an adhesive layer, a metal foil layer such as an aluminum foil, and an inorganic deposited film.

  In the bag according to the first embodiment of the present invention, as shown in FIG. 3A, an inner layer half cut 12 for peeling trigger is formed at the boundary between the peeling trigger portion of the outer layer and the remaining portion of the outer layer. It is formed with the depth which penetrates substantially.

  The inner layer half cut for peeling trigger may be a solid line or a broken line (perforation), or may be a single line or a plurality of lines.

  For example, in the bag 1 according to the first embodiment of the present invention, as shown in FIGS. 1 to 3, the peeling trigger inner layer half cut 12 may be formed as a single line or a plurality of lines, but for peeling trigger. In order to facilitate alignment of the inner layer half cut 12 and the inner peripheral seal portion 11, it is preferable that the inner layer half cut 12 and the inner peripheral seal portion 11 are formed as a plurality of lines.

  In addition, by providing multiple rows of inner layer half cuts for peeling triggers, even if the inner layer half cut accuracy is poor and there is something that does not reach the peeling surface, the possibility of becoming unable to peel the outer layer is reduced. Can do.

  In the bag body 1 according to the first embodiment of the present invention, as shown in FIG. 4, the opening inner layer half-cut 13 is formed at a depth substantially penetrating the inner layer 8 at a location corresponding to the outline of the opening 6. Has been. That is, the region of the opening 6 can be defined by the opening inner layer half cut 13.

  The opening inner layer half cut is preferably formed in an annular shape.

  In the inner layer, an opening may be formed by punching from the beginning instead of the opening inner layer half-cut. Even in that case, before the peelable outer layer is peeled, the opening is covered with the outer layer, so that the liquid impermeability of the laminated film is maintained.

[Peelable outer layer]
The peelable outer layer is a layer that faces the outside of the bag when the bag is formed.

  In the bag 1 according to the first embodiment of the present invention, as shown in FIG. 3A, peeling of the peelable outer layer 9 is suppressed by the peripheral seal portion 2. On the other hand, as shown in FIG. 3 (b), when the bag body is torn along the planned tear line, a new side of the peeling trigger part 4 is formed, which makes it easy to pinch the peeling trigger part 4. The outer layer 9 can be peeled off.

  Further, as shown in FIG. 3 (c), the outer layer 9 is peeled by pinching the peeling trigger portion 4, and the outer layer 9 is removed from the bag as shown in FIGS. 3 (d) and 4 (d). Can be peeled off.

  As shown in FIGS. 7 and 8, the outer layer can have an optional outer layer half cut 9a carved from the outer layer side of the laminated film. When the peeling trigger part 4 is pinched by the outer layer half cut to peel off the outer layer, only a part of the outer layer constituting the laminated film is peeled off. Therefore, by having the outer layer half cut, the area of the outer layer to be peeled is reduced, and the outer layer can be peeled more easily.

  As shown in FIGS. 7 and 8, it is preferable that the outer layer half cut has one end that is in contact with the planned tear line and the outer end of the peripheral seal portion 2 is the other end.

  The outer layer may be liquid permeable or liquid impermeable if the inner layer is liquid impermeable. However, in order to improve the liquid impermeability of the bag, the outer layer is preferably liquid impermeable. Accordingly, the outer layer may include the same layer as the base material layer used for the inner layer.

  As the base material layer for forming the outer layer, for example, paper, PET film, LDPE film, MDPE film, HDPE film, LLDPE film, PP film, nylon film and the like may be used alone or in combination. The paper used as the outer layer is preferably waterproofed.

  The outer layer may also include other layers such as a resin or paper layer other than the base material layer, an adhesive layer, a metal foil layer such as an aluminum foil, and an inorganic deposited film. Further, the peeling of the outer layer will be described in detail below.

[Peeling of outer layer]
In a liquid impermeable film, the peeling of the outer layer is not restricted by the mechanism of action, but can be achieved by interfacial peeling or cohesive failure.

  For example, an outer layer is peeled from the interface between the outer layer and the easily peelable resin layer by disposing a layer formed of an easily peelable resin (hereinafter referred to as “easy peelable resin layer”) between the inner layer and the outer layer. Alternatively, the outer layer and the easily peelable resin layer can be peeled from the interface between the inner layer and the easily peelable resin layer.

  In the first embodiment of the present invention, when an easily peelable resin layer is used and the outer layer and the easily peelable resin layer are peeled from the interface between the inner layer and the easily peelable resin layer, the peeling is not caused by cohesive peeling but by interface peeling. It is preferable because no peeling marks remain on the peeling surface and a clean peeling surface is obtained.

  In the second embodiment of the present invention, a layer formed of a release agent such as a release varnish (hereinafter referred to as “release agent layer”) is disposed between the outer layer and the inner layer, thereby removing the release agent layer. The outer layer can be peeled or the outer layer and the release agent layer can be peeled from the inner layer.

  In that case, when a peeling varnish layer with a dot pattern peeling varnish and a solid pattern peeling varnish is disposed on the surface of the inner layer, and an adhesive layer is disposed between the inner layer and the outer layer, the peeling varnish is not printed on the inner layer. In the portion, the inner layer and the outer layer are bonded by the adhesive layer, and in the portion where the release varnish is printed, the inner layer and the outer layer are pseudo-bonded. Therefore, the outer layer and the release varnish layer can be peeled from the inner layer by using the solid pattern release varnish layer on the surface of the inner layer as a trigger, which is preferable.

  Generally, the release agent can be disposed on the outer layer and / or the inner layer by printing. As shown in FIGS. 5 and 6, the bag body 1 ′ according to the second embodiment of the present invention has a solid printing portion 14 of the release agent on the inner surface side of the portion corresponding to the peeling trigger portion 4 of the outer layer 9. And a dot printing portion 18 of a release agent is provided at another location on the inner surface side of the outer layer 9.

  Further, the outer layer and the inner layer can be peeled by placing a layer formed of a resin having a weak cohesive force between the outer layer and the inner layer and applying the stress to the resin to break it.

(Easily peelable resin and release agent)
The easily peelable resin and the release agent will be described below.

(Easily peelable resin)
The easily peelable resin ensures the adhesion between the outer layer and the inner layer before the force is applied, but when the force is applied, the outer layer is peeled off from the interface between the outer layer and the easily peelable resin layer, or the inner layer and the easily peelable resin. It is resin which can make an outer layer and an easily peelable resin layer peel from the interface of a layer.

  As the easily peelable resin, for example, a resin in which a cyclic olefin copolymer (COC) is mixed with polyolefin at a predetermined ratio is preferable.

  Examples of the polyolefin include a polyethylene resin and a polypyrene resin, and it is preferable to use LDPE. Examples of the LDPE include a trade name “Petrocene” manufactured by Tosoh Corporation and a trade name “Suntech” manufactured by Asahi Kasei Chemicals Corporation.

  The MFR of the polyolefin may be about 0.01 g / 10 min or more, or about 1 g / 10 min or more at a temperature of 190 ° C., and the MFR is about 60 g / 10 min or less, Or it may be about 50 g / 10 min or less.

The density of the polyolefin may be about 0.89 g / cm ³ or more, or about 0.90 g / cm ³ or more, and the density is 0.94 g / cm ³ or less, or 0.93 g / cm ³ or less. It may be.

  “Cyclic olefin copolymer (COC)” is a so-called Ziegler catalyst in which an α-olefin and a cyclic olefin are converted into a hydrocarbon solvent such as hexane, heptane, octane, cyclohexane, benzene, toluene, xylene. And a copolymer that can be obtained by preparing a catalyst such as a metallocene catalyst. Examples of such a copolymer include trade name “Apel” manufactured by Mitsui Chemicals, Inc.

  The COC MFR may be about 0.1 g / 10 min or more, or about 1 g / 10 min or more at a temperature of 190 ° C., and the MFR is about 40 g / 10 min or less, or about 30 g / 10 min. It may be less than a minute.

  By changing the mixing ratio of LDPE and COC, the easily peelable resin can control the interfacial peel strength between the outer layer and the inner layer to be peeled and can be adjusted to a desired value.

  The content of COC in the easily peelable resin may be about 1% by mass or more, or about 2% by mass or more, and the content is about 24% by mass or less, or about 20% by mass or less. It's okay. When the content of COC is about 1% by mass or more, the peel strength between the layer to be peeled off and the easily peelable resin layer is optimized, and the interfacial peeling between them becomes easy. It is preferable for it to be less than or equal to mass% since it is easy to control the peel strength of both.

  The thickness of the easily peelable resin layer may be about 10 μm or more, or about 12 μm or more in order to achieve both adhesion and peelability with the layer to be peeled, and this thickness is It may be about 30 μm or less, or about 25 μm or less.

(paint remover)
The release agent is a resin or additive that inhibits the adhesion between the inner layer and the outer layer. When a release agent is disposed between the inner layer and the outer layer, the inner layer and the outer layer are apparently bonded due to the pseudo-adhesiveness of the release agent, but are separated immediately when a force is applied.

  Therefore, in the bag body 1 ′ of the first embodiment of the present invention, as shown in FIGS. 5 and 6, the inner layer and the outer layer are adhered around the peeling trigger portion 4 corresponding to the solid printing portion 14 of the release agent. Thus, it is preferable to suppress peeling of the peeling trigger portion 4 until the bag body 1 ′ is cut from the tear guide portion 5.

  Examples of the release agent include at least one selected from the group consisting of cellulose resins such as silicone resins and nitrocellulose resins, urethane resins, aminoalkyd resins, polyamide resins, and polyester resins; aqueous varnishes; oily varnishes Peeling varnish such as UV curable varnish; Among these, as a peeling varnish, the mixture of a silicone resin and a cellulose resin is preferable.

  More preferably, the release varnish is a mixture of at least one of the resins listed above and a wax. The wax content in the mixture may be about 20% or more, or about 30% or more, and about 85% or less, or about 80% or less, based on the weight of the mixture. .

  When the content of the wax is about 20% by mass or more, picking of another layer adjacent to the release varnish layer can be prevented, and when the content is about 85% by mass or less, the release varnish is preferable. It is preferable because delamination of layers can be prevented. Specifically, as the peeling varnish, “Polycoat P-91” manufactured by DIC Graphics may be used.

<Constituent elements of the bag>
Hereinafter, the “periphery seal part”, “inner seal part”, “bag part”, “separation trigger part”, “tearing guide part”, “opening”, “bottom member” and “contents” which are constituent elements of the bag body Each thing will be explained.

[Rim seal part]
The peripheral seal part is a seal part that seals part or all of the peripheral part of the liquid impermeable film to form a bag part.

  In the bag 1 according to the first embodiment of the present invention, as shown in FIG. 1, the peripheral seal portion 2 is formed only on a part of the peripheral portion of the liquid non-permeable film. The bag portion 3 is sealed by the inner peripheral seal portion described. Further, in the bag body 1 ′ of the second embodiment of the present invention, as shown in FIG. 5, the peripheral seal portion 2 is formed on the entire peripheral portion of the liquid impermeable film, whereby the peripheral seal portion 2. Only by this, the bag portion 3 is sealed.

  Examples of the method for forming the peripheral seal portion include a heat melting method, an adhesive method, and a mechanical bundling method. Among these methods, the heat melting method is preferable, and the heat sealing method is more preferable.

  As shown in FIGS. 1 and 2, when the peripheral seal portion 2 is only partially formed at the peripheral portion of the liquid impermeable film, the peripheral unsealed portion where the peripheral seal portion 2 is not formed is It is preferable that the bag body 1 is disposed at a position where the content does not come out from the peripheral unsealed portion even if the bag body 1 is made to stand by itself.

  The peripheral seal part includes an upper seal part that seals at least a part of the upper part of the bag body, a side seal part that seals at least a part of the side part of the bag body, and / or at least a part of the bottom part. It is preferred to have a sealed bottom seal. Each of these will be described below.

[Upper seal part]
The upper seal portion is a seal portion that seals at least a part of the upper portion of the bag body. The upper seal part is preferably formed in order to seal the bag after the bag part is filled with the contents. Moreover, in order to ensure the space of the content in a bag part, it is preferable that an upper seal part is formed along the upper end edge of the 1 or several liquid impermeable film which forms a bag.

  As shown in FIG. 4 (b), in the first embodiment of the bag body of the present invention, when the bag body is cut from the tear guide portion along the planned tear line, the upper seal portion is removed and the bag portion is removed. After being opened, it is possible to put in additional charge from the top of the bag.

[Bottom seal part]
The bottom seal portion is a seal portion that seals at least a part of the bottom portion of the bag body. The bottom seal part seals the bottom edges of the pair of liquid impermeable films forming the bag body; the liquid impermeable film is folded, and the folded bottom member is placed in the bottom of the folded film. The bottom of the folded film and at least a part of the bottom member are sealed; or the folded bottom member is preferably sandwiched between a pair of liquid-impermeable films and sealed. .

  In order to inflate the bag portion of the bag body outwardly, to give the bag body a self-supporting property, and / or to secure a space for the contents in the bag portion, it is preferable that the bottom seal portion has a ship bottom shape. For example, the liquid impermeable film is folded and the folded bottom member is placed in the bottom of the folded film to seal the folded film bottom and at least a portion of the bottom member; By sealing the bottom member sandwiched between a pair of liquid impermeable films, a bottom seal portion having a ship bottom shape can be obtained.

(Side seal)
The side seal portion is a seal portion that seals at least a part of the side portion of the bag body. In order to secure a space for the contents in the bag portion, the side seal portion is preferably formed along the side edge of one or more liquid-impermeable films forming the bag body.

  The length of the side seal part may be about 1.1 times or more, about 1.3 times or more, about 1.5 times or more or about 2 times or more of the length of the top seal part or the bottom seal part. The length of the part seal part may be about 10 times or less, about 9 times or less, or about 8 times or less the length of the top seal part or the bottom seal part.

  Generally, when a bag is formed by folding a single liquid-impermeable film, at least one side seal portion is formed. On the other hand, when forming a bag body with a pair of liquid impermeable films, at least two side seal portions are formed.

  Generally, when a bag is formed of a plurality of liquid impermeable films, both sides of the bag are sealed, so that a first side seal and a second side seal are formed as side seals.

  As shown in FIGS. 1 and 2, in the first embodiment of the bag body of the present invention, the first side seal portion extends upward from one end edge of the bottom seal portion, and a pair of liquid impervious portions. The side portion of the adhesive film is sealed, but it does not have to reach the upper seal portion.

  On the other hand, the second side seal portion may extend upward from the other edge of the bottom seal portion, seal the side portions of the pair of liquid impermeable films, and reach the upper seal portion.

  In that case, of the two end portions of the first side seal portion, the end portion not in contact with the bottom seal portion (that is, the upper end portion not reaching the upper seal portion) is in contact with the inner peripheral seal portion 4. Can do. Therefore, the upper end portion of the first side seal portion can correspond to one end portion of the inner peripheral seal portion 4.

[Rimless seal part]
The peripheral unsealed portion means a portion that is not sealed at the peripheral portion of the liquid impermeable film. When the peripheral seal portion is formed only on a part of the peripheral portion of the liquid impermeable film, the peripheral unsealed portion is formed.

  Specifically, the peripheral unsealed portion, the peripheral seal portion, and the inner peripheral seal portion can be disposed so as to surround the peeling trigger portion. In that case, it is preferable to tear the bag body from the tear guide part and remove at least a part of the peripheral seal part (particularly, the upper seal part) because the peeling trigger part can be easily pinched from the peripheral unsealed part.

  As shown in FIGS. 1 and 2, in the first embodiment of the bag body of the present invention, when the peeling trigger portion 4 has a triangular shape, a peripheral unsealed portion and a peripheral sealing portion 2 are formed on three sides of the triangle. A part (that is, the upper seal portion) and the inner peripheral seal portion 11 can be respectively disposed. In this case, as shown in FIG. 3B, in the first embodiment of the bag of the present invention, when the upper seal portion is removed, the two sides of the peeling trigger portion 4 are not sealed. Therefore, the peeling trigger part 4 becomes easy to pinch. In addition, as shown in FIG. 3A, in the first embodiment of the bag body of the present invention, the peeling trigger portion 4 can be pinched from the peripheral unsealed portion before the upper seal portion is removed. As shown in FIG. 3C, by removing the upper seal portion, a new side of the peeling trigger portion 4 can be formed, and the peeling trigger portion 4 can be made relatively easy to pinch.

[Inner seal part]
The inner peripheral seal portion is a seal portion that seals a part of the inside of the peripheral edge of the liquid impermeable film, and the peripheral seal portion 2 is formed only on a part of the peripheral edge of the liquid impermeable film. The seal part is integrated with the peripheral seal part to seal the bag part.

  The sealing method for forming the inner peripheral seal portion may be the one described above as the sealing method for forming the peripheral seal portion.

  Specifically, for example, when the peeling trigger part is formed near the outer periphery of the bag body, the boundary between the outer layer peeling trigger part 4 and the other part of the outer layer, and / or the outer layer peeling trigger part 4 and the bag part. It is preferable to form an inner peripheral seal portion as a boundary with 3.

  The position of the inner peripheral seal portion may be arbitrarily determined according to the shape of the bag body, the peeling trigger portion, or the bag portion. For example, the inner peripheral seal portion intersects the upper side, the side edge, or the bottom side of the bag body. Preferably, it can be formed in a direction oblique to any of these sides.

  In the first embodiment of the present invention, as shown in FIGS. 1 and 2, the inner peripheral seal portion 11 is formed obliquely from the upper end of one side seal portion toward the upper seal portion, and It can be a boundary between the peeling trigger part 4 and the bag part 3.

[Bag]
The bag part is a part formed by sealing part or all of the peripheral part of the liquid impermeable film with the peripheral seal part, and can store the contents. The contents are, for example, solids, liquids, gases, etc., and are particularly solid foods.

  The bag portion can be opened by tearing the bag body from the tear guide portion and removing at least a part of the peripheral seal portion.

  Usually, with the contents stored in the bag portion, the peripheral portion of the bag body is sealed with a peripheral seal portion, and the bag portion is sealed. In this case, after removing at least a part of the peripheral seal portion (for example, the upper seal portion) from the bag body and opening the bag portion, additional input such as solid, liquid, gas, etc. from the opened portion of the bag body Can be put in a bag and the contents can be brought into contact with the additional charge.

  In addition, the bag part can also be sealed by sealing the peripheral part of the bag body with the peripheral seal part in a state where the contents are not stored in the bag part. In this case, after removing at least a part of the peripheral seal portion (for example, the upper seal portion) from the bag body and opening the bag portion, solid, liquid, gas, etc. are transferred from the opened portion of the bag body to the bag body. May be included. That is, in this case, the bag can be used as a substitute for a container or a monkey.

  In the first embodiment of the present invention, as shown in FIGS. 1 and 2, the bag body 3 is sealed by the peripheral seal portion 2 and the inner peripheral seal portion 11. In this case, when the bag body 1 is torn from the tear guide part 5, after removing a part of the peripheral seal part 2 (for example, the upper seal part) and a part of the inner peripheral seal part 11 and opening the bag part 3 Then, an additional charge such as water can be charged.

  Further, in the first embodiment of the present invention, as shown in FIG. 4A, when the contents 15 are stored in the bag portion, as shown in FIG. When the bag part is cut from the part 5 and the upper seal part is removed, the upper part of the bag part 3 is opened. Therefore, an additional charge such as water is put into the bag part 3 from here, and the contents 15 is put into water or the like. It becomes possible to process with additional inputs.

  In this embodiment, as shown in FIGS. 4C and 4D, when the peelable outer layer 9 is peeled, the opening 6 is formed in the bag portion, so that water can be drained from the bag portion. It becomes possible. In that case, the bag part can be used for draining water or draining water.

  In the second embodiment of the present invention, as shown in FIG. 5, the bag body 3 is sealed by being surrounded by the peripheral seal portion 2. Further, when the bag body 1 ′ is cut from the tear guide portion 5 and a part of the peripheral seal portion 2 (for example, the upper seal portion) is removed from the bag body 1 ′, the bag portion 3 is opened. Additional inputs such as can be input.

The bag portion is preferably formed by any of the following methods I to V:
A method (I) in which the laminated film is folded so that the inner layers face each other and the folded portion is M-shaped, and the upper and both sides of the folded film are sealed with a peripheral seal portion;
A method (II) in which the laminated film is folded so that the inner layers face each other and the folded portion is on one side, and the other side, top and bottom of the folded film are sealed with a peripheral seal portion. ;
Fold the laminated film so that the inner layers face each other and the folding part is on one side, put the bottom member folded in two into the bottom of the folded film, and the bottom of the folded film A method (III) of sealing at least a part of the bottom member with a peripheral seal portion and sealing the other side and upper portion of the folded film with a peripheral seal portion;
Method (IV) of stacking the laminated film and another film and sealing the upper part, both side parts and the bottom part with a peripheral seal part; or sandwiching the folded bottom member between the laminated film and the other film, the upper part and both side parts And (V) sealing the bottom with a peripheral seal.

  Moreover, in order to give a bag body self-supporting property, it is preferable that the bottom part of a bag part is a ship bottom shape. For example, if a bag part is formed by the said method (I), (III) or (V), the bottom part of a bag part can be made into a ship bottom shape.

[Peeling trigger part]
A peeling trigger part is a part used as a trigger for peeling the peelable outer layer. The peeling trigger part can be formed as a part of the peelable outer layer, as a part of the inner layer, or as a part of a laminated film including the inner layer and the peelable outer layer.

  As long as it arrange | positions so that a part or all of a peeling trigger part cannot be pinched easily, the position of the peeling trigger part in a bag body may be determined arbitrarily. For example, the peeling trigger part is preferably formed so as not to protrude outward from the peripheral part of the liquid impermeable film.

  On the other hand, when the bag body is torn from the tearing guide portion, a new side of the peeling trigger portion is formed, and the peeling trigger portion is easily pinched. The new side of the peeling trigger part may be a straight line or a curved line. For example, until the bag body is torn from the tear guide portion, the separation trigger portion is apparently difficult to recognize, but as soon as the bag body is torn from the tear guide portion, the separation trigger portion can appear. .

  In this way, by changing the ease of gripping of the peeling trigger part before and after the bag body tearing, not only the peeling trigger part is prevented from being damaged or detached during the transportation of the bag body, but also from the tear guide part before the tearing. In addition, it is possible to prevent a user's error that the outer layer is peeled off.

  In the first embodiment of the present invention, as shown in FIGS. 1 and 2, the peeling trigger portion 4 can be formed close to one of the side portions of the bag body 1. In that case, the area | region of the peeling trigger part 4 in the bag body 1 is arbitrarily determined according to the peripheral seal part 2, the inner peripheral seal part 11, the peripheral non-seal part, the tear guide part 5, and the inner layer half cut 12 for peeling trigger. can do.

  Further, as shown in FIGS. 3A and 3B, when the bag body 1 is cut along the planned tear line and the upper seal portion of the peripheral seal portion 2 is removed, a new side of the peeling trigger portion 4 is obtained. Is formed as a part of the laminated film 7 including the inner layer 8 and the peelable outer layer 9, whereby at least a part of the peeling trigger part 4 is easily pinched. Further, as shown in FIG. 3C, when the peeling trigger 4 is pinched and pulled, the peelable outer layer 9 can be peeled at the inner layer half cut 12.

  In the second embodiment of the present invention, as shown in FIG. 5, the peeling trigger portion 4 of the bag body 1 ′ is formed so as not to be adjacent to the peripheral seal portion 2 and to be integrated with the bag portion 3. Can be done. In other words, the peeling trigger part 4 does not protrude outward from the bag body 1 ′ and can be embedded in the bag body 3.

  Also, from FIGS. 6A and 6B, the region of the peeling trigger portion 4 in the bag body 1 ′ corresponds to the peripheral seal portion 2, the bag body 3, the tear guide portion 5, and the solid printing portion 14 of the release agent. It is clear that it will be decided. In that case, when the bag body 1 ′ is cut along the planned tear line and the upper seal part of the peripheral seal part 2 is removed, the new side of the peeling trigger part 4 appears as a part of the peelable outer layer 9. To do.

  Therefore, since the adhesion between the inner layer 8 and the outer layer 9 is hindered by the solid printing portion 14 of the release agent at the position corresponding to the peeling trigger portion 4 in the laminated film 7, the user can enter the gap between the inner layer 8 and the outer layer 9. The peeling trigger part 4 can be easily pinched by inserting a finger or the like.

  In the third embodiment of the present invention, as shown in FIGS. 7 and 8, the portion of the liquid impermeable film that is opposed to the peeling trigger portion is at least partially removed, and the peeling trigger portion is removed. The inner surface is at least partially exposed. Here, the inner side surface of the peeling trigger portion means a surface opposite to the outer layer peeled by the peeling trigger portion.

  According to this, as shown in FIG. 9 (b), there is a non-overlapping region between the peeling trigger portion 4 and the portion facing the peeling trigger portion, so that the bag body is separated from the tear guide portion. Since this non-overlapping area can be pinched after tearing, the separation trigger part becomes easier to pinch.

  In the third embodiment of the present invention, the shape of the portion facing the peeling trigger portion may be a shape obtained by removing an arbitrary shape from the shape of the peeling trigger portion. For example, the shape of the portion facing the peeling trigger portion may be a trapezoid obtained by removing the triangle from the shape of the peeling trigger portion that is a triangle as shown in FIG.

[Cleaping Guide]
The tearing guide part is a part that allows the bag body to be torn by removing at least a part of the peripheral seal part and opening the bag part. The tear guide part may be formed as a trigger for starting the tearing of the bag body or as a guide part for determining the boundary between the peripheral seal part and the bag part.

  As long as at least part of the peripheral seal portion can be removed by tearing the bag body and the bag portion can be opened, the position and form of the tear guide portion in the bag body can be arbitrarily determined. In any case, in order to form a new side of the separation trigger portion after the bag body is torn from the tear guide portion and to make it easy to pinch the separation trigger portion, it is preferable that the planned tear line intersects with the separation trigger portion. .

  For example, as shown in FIG. 2, the tearing guide portion 5 is preferably formed above one side seal portion so that the upper portion of the bag portion opens after the bag body is torn. In that case, it is considered that the planned tear line crosses the bag body from the tear guide part 5 to the other side seal part in the width direction of the bag body and intersects the peeling trigger part 4.

  For example, as shown in FIGS. 3 (a) and 3 (b) and FIGS. 4 (a) and 4 (b), if the bag body is torn along the planned tear line from the tear guide portion and the upper seal portion is removed, the peeling occurs. A new side of the trigger part 4 is formed so that a part of the peeling trigger part 4 can be easily picked and the upper part of the bag part is opened.

  As the cutting guide portion, for example, a notch, a line, a hole, or the like may be formed alone or in combination.

  When the bag has a notch, the user can cut the bag along an arbitrary tear line starting from the notch so that at least a part of the peripheral seal portion and the bag can be separated.

  When the liquid-impermeable film forming the bag includes a stretched film such as a uniaxially stretched film, the notch is placed at a position where the bag can be cut along the stretched direction of the stretched film starting from the notch. It is preferable to do.

  The form of the notch as the tear guide part is not limited, but may be, for example, a V-type or an I-type.

  It is preferable that the line and / or hole as the tear guide part is formed along a planned tear line that can separate at least a part of the peripheral seal part and the bag part. It is also preferred that the lines and / or holes are formed with notches.

The line as the tearing guide part may be a solid line or a dotted line, and may be one or more. The line is preferably engraved as a half cut line in the inner layer and / or the outer layer by, for example, CO ₂ laser irradiation.

  One or a plurality of holes may be used as the tearing guide portion. For example, it is preferable to form a large number of holes along the planned tear line with a wound roll or the like. In that case, the hole diameter of one hole is preferably about 0.1 mm or more or about 0.2 mm or more, and the hole diameter is preferably about 0.4 mm or less or about 0.3 mm or less.

[Opening]
When the peelable outer layer is peeled off from the bag of the present invention, the opening is exposed in the remaining inner layer.

  The opening preferably discharges an additional charge which is a liquid such as water or hot water. Such an opening makes the bag body drainable or hot water drainable. Also, such openings preferably have dimensions that allow the additional charge that is liquid to pass through, but not the contents that are solid.

  In order to expose the opening of the inner layer by peeling off the outer layer, it is necessary to form an opening in the inner layer by punching in advance, or to form a half cut that substantially penetrates the inner layer at a location corresponding to the outline of the opening. preferable.

  As the shape of the opening, for example, in addition to a circle, an ellipse, a rounded rectangle, an egg, a triangle, a quadrangle, a pentagon or more polygon can be freely selected. Although the number of openings may be one or more, it is usually preferable to have a plurality of openings in order to quickly discharge the additional charge which is a liquid such as water without causing the contents to flow out.

  The position of the opening in the inner layer is not limited, but can be determined according to the size and arrangement of the contents, the amount of liquid poured into the bag portion, and the like. Specifically, for example, when an opening is formed at a position equal to or lower than the liquid level of the bag portion when the bag is raised, immediately after the opening is exposed, the additional charge that is liquid from the opening The discharge begins. Further, when the opening is formed at a position exceeding the liquid surface height of the bag portion, the additional charge which is a liquid can be discharged by exposing the opening and further decanting the bag body.

  In the first embodiment of the bag body of the present invention, as shown in FIGS. 4C and 4D, when the outer layer 9 peels, the portion of the inner layer 8 surrounded by the opening inner layer half-cut 13 Is removed while adhering to the outer layer 9, so that the opening 6 can be formed. In addition, the opening 6 does not allow the contents 15 to pass through, but has a size that allows water to pass through, so that a liquid discharge mechanism can be provided to the bag body.

  The portion of the inner layer 8 surrounded by the opening inner layer half-cut 13 is a circle without an angle, an ellipse, a rounded rectangle, an oval, etc. so as not to be caught when pulled out by being attached to the outer layer 9. It is preferable.

[Bottom member]
The bottom member is an additional member that forms the bottom of the bag. In general, when a bag body is formed of one or more liquid-impermeable films without using a bottom member, the bag body becomes a flat bag. On the other hand, by forming a bag body using a liquid impermeable film and a bottom member in combination, a standing pouch can be obtained by imparting self-supporting properties to the bag body. In addition, it is preferable that the bag body includes a bottom member because the bag capacity increases.

  In addition, when the bag body is formed by using the folded bottom member, before the contents are stored in the bag body, the bag body can be prevented from being bulky and the display suitability of the bag body can be improved. Therefore, it is preferable. In the first embodiment of the present invention, the bottom portion of the bag portion is formed into a ship bottom shape by forming a bag body using a folded bottom member and a liquid impermeable film.

  Also, as shown in FIGS. 1 and 2, when there are notches 16 penetrating both surfaces of the folded bottom member, a pair of liquid imperviousness is formed when the bottom seal portion of the bag 1 is formed. It is preferable because the films or the both surfaces of the folded liquid non-permeable film can be directly adhered to each other.

  Furthermore, when the bottom member and the liquid-impermeable film are heat-sealed, if a heat-seal bar having irregularities is used, the unsealed portion 17 is formed according to the concave portion of the seal bar as shown in FIGS. It is preferable to leave the air pocket generated at the time of bottom sealing to the unsealed portion 17 intentionally and improve the appearance of the bottom sealing portion.

[Contents]
The contents stored in the bag may be solid, liquid, gas, gel or the like. Contents include, for example, dried foods such as dried shiitake mushrooms and dried wakame; other food products such as beverages, yakisoba, pasta, vegetables, boiled eggs; articles such as chemicals, cosmetics, detergents, fragrances, and pharmaceuticals And gaseous substances such as air and oxygen.

  In the first embodiment of the present invention, since the bag body has a function of sealing the bag portion, a water injection function, and a drainage function, it is preferable that the contents absorb additional input such as a liquid. In that case, the additional charge may in particular be a liquid such as water, in particular cold water or hot water. Moreover, the content which can absorb a liquid can be the said dried food. Therefore, it is preferable that the contents are subjected to an immersion treatment with an additional charge such as cold water or hot water.

  As shown in FIG. 4B, in the first embodiment of the present invention, the contents 15 capable of absorbing water are stored in the bag portion, and the bag body is cut along the planned tear line. When the portion is opened and water is poured into the bag portion, the content 15 can be absorbed and the content 15 can be immersed. Thereafter, by removing water from the opening 6 formed in the inner layer 8, only the content 15 that has absorbed water remains in the bag portion, and the content 15 that has absorbed water from the upper opening can be easily taken out. (FIGS. 4C and 4D). In this way, the contents 15 can be subjected to an immersion treatment with water.

<Production method of bag>
The bag of the present invention can be manufactured, for example, by a method including the following steps:
(A1) A process of obtaining a laminate Ia by extruding or laminating a sealant on an inner surface base material layer to form a sealant layer;
(A2) A step of providing an outer surface base material layer and extruding and laminating an easily peelable resin between the inner surface base material layer side of the laminate Ia and the outer surface base material layer to obtain a laminate IIa;
(A3) Using a cutter such as a die-cut roller, the laminate IIa is engraved from the sealant layer side to form a peeling trigger inner layer half cut and an opening inner layer half cut, thereby obtaining a processed laminate IIa. Process;
(A4) providing a liquid impermeable film having substantially the same outer shape as the processed laminate IIa and a bottom member folded in half;
(A5) The bottom member folded in half is sandwiched between the processed laminate IIa and the liquid non-permeable film so that the sealant layer side of the processed laminate IIa becomes the inner surface of the bag, and the bottom seal, both sides Forming a part seal and an inner peripheral seal part to obtain a bag intermediate A; and (a6) forming a tear guide part in the bag intermediate A.

Moreover, the bag body of this invention can also be manufactured by the method including the following processes, for example:
(B1) A step of printing a release varnish layer on the inner surface base material layer with a solid pattern and a dot pattern;
(B2) a step of obtaining a laminate Ib by extruding or laminating a sealant on the side of the inner surface base material layer where the release varnish layer is not printed to form a sealant layer;
(B3) A step of providing an outer surface base material layer and bonding the outer surface base material layer and the side on which the release varnish of the laminate Ib is printed via a dry laminate adhesive to obtain the laminate IIb;
(B4) A step of obtaining a processed laminate IIb by forming an opening inner layer half-cut by engraving from the sealant layer side of the laminate IIb using a cutter such as a die cut roller;
(B5) providing a liquid impermeable film having substantially the same outer shape as the processed laminate IIb and a bottom member folded in half;
(B6) A bottom member folded in two is sandwiched between the processed laminate IIb and the liquid non-permeable film so that the sealant layer side of the processed laminate IIb becomes the inner surface of the bag body, and the bottom seal and both sides Forming a part seal to obtain a bag intermediate B; and (b7) forming a tear guide portion in the bag intermediate B.

  Instead of forming the opening inner layer half cut in step (a3) or (b4), or in addition to forming the opening inner layer half cut, punching the laminate Ia or Ib in step (a1) or (b2) An opening may be formed in the stacked body Ia or Ib.

Before step (a6), during step (a6) or after step (a6), or before step (b7), during step (b7) or after step (b7), if desired, using a CO ₂ laser irradiator or the like, You may form the half cut line used as the planned tear line from the outer-layer side of the bag body intermediate body A or B. FIG.

  Step (a5) or (b6) can be performed by heat sealing.

  In the step (a5), it is preferable to seal the bottom and both sides of the sealed object. At that time, it is also preferable to perform sealing so as to form an inner peripheral seal portion. Moreover, it is preferable that one side part is sealed partially and has a peripheral unsealed part. In the side portion having the peripheral unsealed portion, it is also preferable that the inner peripheral seal portion is formed in a substantially oblique direction from the upper end of the side seal portion.

  Further, after the step (a6) or the step (b7), the contents may be stored in the bag body intermediate A or B and / or the upper part of the bag body intermediate A or B may be sealed.

  Here, the manufacturing method of the bag body which concerns on the 1st Embodiment of this invention and the manufacturing method of the bag body which concerns on the 2nd Embodiment of this invention are demonstrated below.

[Method for Producing Bag According to First Embodiment of the Present Invention]
In this embodiment, a bag as shown in FIG. 1 is manufactured.

[Production of liquid non-permeable laminated film]
Prepare the following materials:
O-Ny film (thickness: 25 μm): “Super Neal E” manufactured by Mitsubishi Plastics
PET film (thickness: 8 μm): “CB901” manufactured by KOLON
PET film (thickness: 12 μm): “E5100” manufactured by Toyobo Co., Ltd.
HDPE film (thickness: 35 μm): “H-500S” manufactured by Aicello Chemical
LLDPE film (thickness: 30 μm): “Suzuron L-105” manufactured by Aicello Chemical
Dry laminate adhesive: “TM265M + CAT RT37” manufactured by Toyo Morton
Easily peelable resin: a mixture of 95% by mass of LDPE (“Petrocene 226” manufactured by Tosoh Corporation) and 5% by mass of COC (“Apel 6013B” manufactured by Mitsui Chemicals, Inc.)

Using a dry laminator, the application amount of the dry laminate adhesive is set to 3 g / m ² , and the O-Ny film and the PET film “CB901” are bonded via the dry laminate adhesive to obtain the member a.

Using a dry laminator, the dry laminating adhesive application amount is set to 3 g / m ² , the HDPE film is bonded to the PET film “CB901” side of the member a via the dry laminating adhesive, and the member b is bonded. obtain.

Using a dry laminator, the application amount of the dry laminating adhesive is set to 3 g / m ² , and the PET film “E5100” and the LLDPE film are bonded via the dry laminating adhesive to obtain a member c.

  Using an extrusion laminator, an easily peelable resin is extruded between the HDPE film side of the member b and the PET film “E5100” side of the member c at a temperature of about 320 ° C. to about 345 ° C., sand laminated, and laminated film d Get.

  The laminated film d is referred to as “O-Ny film (25) // PET film (8) // HDPE film (35) / easy release resin layer (20) / PET film (12) // LLDPE film (30)”. It has a layer structure. Here, the numerical value in the parenthesis represents the thickness (μm), and “//” represents the dry laminate adhesive.

  In the laminated film d, “PET film (12) // LLDPE film (30)” corresponds to the inner layer, and “O-Ny film (25) // PET film (8) // HDPE film (35 ) "Corresponds to the peelable outer layer.

[Production method of bag]
A laminated film d, a liquid impermeable film e different from the laminated film d, and a bottom member f are prepared.

  An inner layer half cut for peeling trigger and an inner layer half cut for opening are engraved on the inner layer of the laminated film d with a flexible die.

A tear guide part and a planned tear line are formed in the laminated film d and the liquid impermeable film e with a CO ₂ laser irradiator.

  The bottom member f is punched to form a notch.

  Using a heat sealer, under the conditions of a temperature of 160 ° C., a pressure of 0.3 MPa, and a sealing time of 1.5 seconds, the laminated film d and the liquid impermeable film e are sandwiched and sealed with the bottom member f, A bag intermediate g having a bottom seal portion is obtained.

  Using a heat sealer, seal both sides of the bag intermediate g under the conditions of 160 ° C. temperature, 0.3 MPa pressure and 1.5 seconds sealing time, and trim the side seals at the same time. To obtain a bag intermediate h.

  Fill the bag intermediate h with contents such as dried seaweed.

  Using a heat sealer, the upper part of the bag body intermediate h is sealed under the conditions of a temperature of 160 ° C., a pressure of 0.3 MPa, and a sealing time of 1.5 seconds, and a bag body as shown in FIG. obtain.

[Method for Producing Bag According to Second Embodiment of the Present Invention]

In this embodiment, a bag as shown in FIG. 5 is manufactured.
[Production of liquid non-permeable laminated film]
Prepare the following materials:
O-Ny film (thickness: 15 μm): “Super Neal E” manufactured by Mitsubishi Plastics
O-Ny film (thickness: 15 μm): “Santoniel SNR-W” manufactured by Mitsubishi Plastics, Inc.
O-Ny film (thickness: 15 μm): “Santoniel SNR” manufactured by Mitsubishi Plastics
PET film (thickness: 12 μm): “E5200” manufactured by Toyobo Co., Ltd.
Easy peel film (thickness: 30 μm): “DIFAREN 1900T” manufactured by DIC
Dry laminate adhesive: “A-620 + A-65” manufactured by Mitsui Chemicals, Inc.
Release agent: “Polycoat P-91 (solid content: 10%)” “Silicone / cellulose” manufactured by DIC Graphics

Using a dry laminator, the dry laminating adhesive application amount was set to 3 g / m ² , the O-Ny film “Super Neal E” and the PET film were adhered via the dry laminating adhesive, and the member i was obtain.

Using a dry laminator, set the amount of dry laminate adhesive to 3 g / m ² , and adhere the O-Ny film “Santoniel SNR-W” to the PET film side of member i via the dry laminate adhesive. Member j is obtained.

  A release agent is printed on the O-Ny film “Santonyl SNR” with a solid pattern and a dot pattern to form a release agent printing portion.

Using a dry laminator, set the amount of dry laminating adhesive to 3 g / m ² and print the release agent on the O-Ny film “Santonyl SNR-W” side of the member j and the O-Ny film “Santonyl SNR”. The member k is obtained by bonding the part side to each other via a dry laminate adhesive.

Using a dry laminator, set the amount of dry laminate adhesive to 3 g / m ^2, and attach an easy peel film to the O-Ny film “Santonyl SNR” side of member k via the dry laminate adhesive. A laminated film 1 is obtained.

  The laminated film 1 is "O-Ny (15) // PET (12) // O-Ny (15) // peeling agent printing part (-) / O-Ny (15) // easy peel film (30). Has a layer structure. Here, the numerical value in the parenthesis represents the thickness (μm), and “//” represents the dry laminate adhesive.

  In the laminated film l, “O-Ny (15) // easy peel film (30)” corresponds to the inner layer and “O-Ny (15) // PET (12) // O-Ny ( 15) "corresponds to the peelable outer layer.

[Production method of bag]
A laminated film l, a liquid impermeable film m different from the laminated film l, and a bottom member n are prepared.

  Using a flexible die, a plurality of annular half-cut lines for opening are engraved at a depth reaching the release agent printing portion from the easy peel film surface of the laminated film l.

A tear guide part and a planned tear line are formed in the laminated film l and the liquid impermeable film m with a CO ₂ laser irradiator.

  The bottom member n is punched to form a notch.

  Using a heat sealer, under the conditions of a temperature of 160 ° C., a pressure of 0.3 MPa, and a sealing time of 1.5 seconds, the laminated film l and the liquid impermeable film m are sandwiched and sealed with the bottom member n, A bag intermediate body o having a bottom seal portion is obtained.

  Using a heat sealer, seal both sides of the bag intermediate o under the conditions of a temperature of 160 ° C., a pressure of 0.3 MPa and a sealing time of 1.5 seconds, and trim the side seals at the same time. To obtain a bag intermediate p.

  The bag intermediate body p is filled with contents such as dried seaweed.

  Using a heat sealer, the upper part of the bag intermediate body p was sealed under the conditions of a temperature of 160 ° C., a pressure of 0.3 MPa, and a sealing time of 1.5 seconds, and a bag body as shown in FIG. obtain.

[Method for Producing Bag According to Third Embodiment of the Present Invention]
In this embodiment, a bag as shown in FIG. 7 is manufactured.

[Production of liquid non-permeable laminated film]
Prepare the following materials:
O-Ny film (thickness: 25 μm): “Super Neal E” manufactured by Mitsubishi Plastics
PET film (thickness: 8 μm): “CB901” manufactured by KOLON
PET film (thickness: 12 μm): “E5100” manufactured by Toyobo Co., Ltd.
HDPE film (thickness: 35 μm): “H-500S” manufactured by Aicello Chemical
LLDPE film (thickness: 30 μm): “Suzuron L-105” manufactured by Aicello Chemical
Dry laminate adhesive: “TM265M + CAT RT37” manufactured by Toyo Morton
Easily peelable resin: a mixture of 95% by mass of LDPE (“Petrocene 226” manufactured by Tosoh Corporation) and 5% by mass of COC (“Apel 6013B” manufactured by Mitsui Chemicals, Inc.)

Using a dry laminator, the application amount of the dry laminating adhesive is set to 3 g / m ² , and the O-Ny film and the PET film “CB901” are adhered via the dry laminating adhesive to obtain the member q.

Using a dry laminator, the dry laminating adhesive application amount was set to 3 g / m ² , the HDPE film was bonded to the PET film “CB901” side of the member q via the dry laminating adhesive, and the member r was obtain.

Using a dry laminator, the application amount of the dry laminating adhesive is set to 3 g / m ² , and the PET film “E5100” and the LLDPE film are bonded via the dry laminating adhesive to obtain the member s.

  Using an extrusion laminator, an easily peelable resin is extruded between the HDPE film side of the member r and the PET film “E5100” side of the member s at a temperature of about 320 ° C. to about 345 ° C., sand laminated, and laminated film t Get.

  The laminated film t is referred to as “O-Ny film (25) // PET film (8) // HDPE film (35) / easy release resin layer (20) / PET film (12) // LLDPE film (30)”. It has a layer structure. Here, the numerical value in the parenthesis represents the thickness (μm), and “//” represents the dry laminate adhesive.

  In the laminated film t, “PET film (12) // LLDPE film (30)” corresponds to the inner layer, and “O-Ny film (25) // PET film (8) // HDPE film (35 ) "Corresponds to the peelable outer layer.

[Production method of bag]
A laminated film t, a liquid impermeable film u different from the laminated film t, and a bottom member v are prepared.

  The inner layer half cut for peeling trigger and the inner layer half cut for opening are engraved on the inner layer of the laminated film t with a flexible die, and the front half cut for partial opening is engraved on the outer layer of the laminated film t.

A tear guide part and a planned tear line are formed in the laminated film t and the liquid impermeable film u with a CO ₂ laser irradiator.

  Each film of the laminated film t in which the inner layer half cut and the planned tear line are formed, the liquid impermeable film u in which the planned tear line is formed, and the bottom member film v is fed out from the bag making machine.

  After feeding, the bottom member v is folded in half, and then the bottom member v folded in half is punched at a position corresponding to the notch (16) of the bottom member v in FIG. A notch (16) is formed.

  Similarly, after unwinding, the liquid impermeable film u is punched at a location opposite to the peeling trigger portion (4) in FIG. 7 to partially expose the inner surface of the peeling trigger portion. Form.

  Thereafter, the folded bottom member v having the notch (16) is sandwiched between the laminated film t and the liquid impermeable film u having the notch.

  Using a heat sealer, after heat-sealing the bottom seal part under the conditions of a temperature of 160 ° C., a pressure of 0.3 MPa and a seal time of 1.5 seconds, the side seal part and the inner peripheral seal part are Heat sealing is performed to form a continuous bag in which the upper seal part is not sealed.

  In the next step, punched bags are formed in a continuous state, a tear guide is formed, and further cut into a single separated bag shape using a cutting blade, and a bag intermediate body w Get.

  Fill the bag intermediate w with contents such as dried seaweed.

  Using a heat sealer, the upper part of the bag intermediate body w is sealed under the conditions of a temperature of 160 ° C., a pressure of 0.3 MPa, and a sealing time of 1.5 seconds, and a bag body as shown in FIG. obtain.

DESCRIPTION OF SYMBOLS 1, 1 'bag body 2 Peripheral seal part 3 Bag part 4 Peeling trigger part 5 Tear guide part 6 Opening 7 Liquid impermeable film (laminated film)
8 Inner layer 9 Removable outer layer 9a Outer layer half-cut 10 Liquid impermeable film (film facing the laminated film)
DESCRIPTION OF SYMBOLS 11 Inner circumference seal part 12 Inner layer half cut for peeling trigger 13 Inner layer half cut for opening 14 Solid print part of release agent 15 Contents 16 Notch part of bottom member 17 Unsealed part 18 Dot print part of release agent

Claims (14)

A bag that is formed of one or more liquid impermeable films, and at least one of the liquid impermeable films is a laminated film including an inner layer and a peelable outer layer,
A peripheral seal part that forms a bag part by sealing part or all of the peripheral part of the liquid-impermeable film;
A tearing guide part capable of tearing the bag body by removing at least a part of the peripheral seal part and opening the bag part; and a peeling trigger part serving as a peeling trigger for the peelable outer layer;
With
When the bag body is torn from the tearing guide portion, the bag portion is opened, the laminated film is torn, and a new side of the peeling trigger portion is formed, so that the peeling trigger portion can be easily pinched. And when the peelable outer layer is peeled, the opening of the inner layer is exposed. The portion of the liquid impermeable film that corresponds to the peeling trigger portion is at least partially removed, and the inner surface of the peeling trigger portion is at least partially exposed. The described bag.   The peripheral seal part seals only a part of the peripheral part of the liquid impermeable film, and the bag body seals a part of the inside of the peripheral part of the liquid impermeable film. The bag body according to claim 1, further comprising an inner peripheral seal portion that is an inner peripheral seal portion and seals the bag portion integrally with the peripheral seal portion. Wherein said peeling trigger portion of the laminated film, the boundary between the release trigger portion has been removed portion of the laminated film further comprises a release trigger for the inner half-cut that generally through the inner layer, according to claim 1 The bag according to any one of 3 above.   When the outer layer is cut from the outer layer side of the laminated film, and when the outer layer is peeled by pinching the peeling trigger part, only a part of the outer layer constituting the laminated film is peeled off The bag according to any one of claims 1 to 4.   The bag according to any one of claims 1 to 5, wherein contents are stored in the bag portion.   The bag according to claim 6, wherein the content is processed by contact with an additional charge.   The bag according to claim 7, wherein the additional charge is a liquid.   The bag according to claim 8, wherein the contents are immersed by contact with the additional charge that is a liquid.   The bag according to any one of claims 1 to 9, wherein the opening of the inner layer is formed by punching.   The bag body according to any one of claims 1 to 9, wherein an inner half-cut for opening that substantially penetrates the inner layer is formed at a position corresponding to an outline of the opening of the inner layer.   The bag according to claim 10 or 11, wherein the opening can discharge liquid.   The bag according to any one of claims 1 to 12, wherein the inner layer includes a sealant layer as an innermost layer.   The peripheral seal portion includes an upper seal portion that seals at least a portion of the upper portion of the bag body, a side seal portion that seals at least a portion of the side portion of the bag body, and / or the bag body. The bag according to any one of claims 1 to 13, further comprising a bottom seal portion that seals at least a part of the bottom of the bag.

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